Preheat grill for beef. Preheat oven to 375 degrees for pizza. Smear pesto over the crust, add chopped olives and feta. Bake for approximately 10-12 minutes. Meanwhile, grill beef to desired doneness, then let rest. Remove pizza from oven. Slice beef very thin and place on pizza. Add lemon oil to arugula and place on top of pizza. Cut in half and serve.